<template>
    <div>
        <div class="search">
            <input
                v-model="keyword"
                class="search-input"
                placeholder="输入城市名或拼音"
                type="text"
            />
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li
                    class="search-item border-bottom"
                    v-for="item in list"
                    :key="item.id"
                    @click="handleCityClick(item.name)"
                >
                    {{ item.name }}
                </li>
                <li v-show="hasNoData" class="search-item border-bottom">
                    没有找到对应城市
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
import BScroll from "better-scroll"
export default {
    name: "CitySearch",
    props:{
        cities:Object
    },
    data() {
        return {
            keyword: "",
            list: [],
            timer:null
        };
    },
    mounted(){
      this.scroll = new BScroll(this.$refs.search)
    },
    computed:{
      hasNoData(){
        return !this.list.length
      }
    },
    methods: {
        handleCityClick(city) {
            this.$store.commit('changeCity',city)
            this.keyword = ''
            this.$router.push('/')
        }
    },
    watch: {
        keyword(){
            if (this.timer){
            clearTimeout(this.timer)
            }
            if (!this.keyword){
            this.list = []
            return
            }
            this.timer = setTimeout(()=>{
            const result =[]
            for (let i in this.cities){
                this.cities[i].forEach((value)=>{
                if (value.spell.indexOf(this.keyword)>-1||
                value.name.indexOf(this.keyword)>-1){
                    result.push(value)
                }
                })
            }
            this.list = result
            },100)
        }
    }
}
</script>

<style scoped>
.search {
    height: 0.72rem;
    padding: 0 0.1rem;
    background: #00bcd4;
}
.search-input {
    width: 100%;
    height: 0.62rem;
    line-height: 0.62rem;
    text-align: center;
    border-radius: 0.06rem;
    color: #666;
    padding: 0 0.1rem;
    box-sizing: border-box;
}
.search-content {
    z-index: 1;
    overflow: hidden;
    position: absolute;
    top: 1.58rem;
    left: 0;
    right: 0;
    bottom: 0;
    background: #eee;
}
.search-item {
    line-height: 0.62rem;
    padding-left: 0.2rem;
    background: #ffffff;
    color: #666;
}
</style>